Hobbs, Lisa
McGraw-Hill, 1967
Buku Teks
Spear, Percival
The University of Michigan Press, 1961
Buku Teks
Ministry of Information, 1950
Buku Teks
Bagian Publikasi Kementerian Penerangan dan Penjiaran, 1961
Buku Teks
The Publications Division Ministry of Information & Broadcasting Goverment of India , 1953
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